Small Engines (Lawn Mowers, etc.): chain saw timin, piston damage, jaw puller


Question
I installed electronic ignition in my Eager beaver 120, but it
fires to early. How do I time this saw to be later. What should
the igt coil cap be<

Answer
Hello Rogeer:

>>The Flywheel Key Sets the Timing for this Saw.
>>The Ign Coil is Gapped to .020in from the Flywheel.
>>Have you Checked the Flywheel Key?
>>Are you Sure you have Purchased the Correct Electronic Ign Coil for this Unit?
>>The Following is a Basic Instruction File I made for Removing the Flywheel and Replacing the Flywheel/Flywheel Key.  
>>Remove the Cover that Houses the Starter Assembly.
>>Remove the Spark Plug and Use a Bolt the Same Diameter and Threads as the Spark Plug and About 3" Long.
>>Thread the Bolt into the Spark Plug Hole Until it Engages the Piston.
>>Slowly Tighten the Bolt Until you have Locked the Piston and it Does Not Move. **BE CAREFUL A LOT OF TORQUE IS NOT REQUIRED. PISTON DAMAGE CAN OCCUR IF TO MUCH TORQUE IS USED ON THE STOP BOLT**
>>Now Remove the Flywheel Nut.
>>Use a 3 Jaw Puller and Attach the Puller to the Flywheel.
>>Look for a Puller with Flat Jaws. These Slide Under the Flywheel and Allow for Easier Removal.
>>Tighten the Puller and then Hit the Puller with a Hammer. Tighten and Hit Again Until the Flywheel is Loose and Can be Removed from the Crankshaft.
**Note the Key that Aligns the Flywheel to the Crankshaft.**
>>This Key is Most Likely Sheared or Bent and Causing the Plug to Fire Slightly Out of Time and Causing a Compression Lock. There is Not Enough Compression to Kick Back But Enough to Cause the Engine to Seem to Have High Compression or it May Seem to have Low Compression and Not Backfire at All.
>>**Some of the Newer Units have the Flywheel Key as a Part of the Flywheel and the Complete Flywheel has to be Replaced.**
You can View a Breakdown of this Unit at this Site Addy;
http://www.ordertree.com/cms/parts-lookup-help/73.html and Select the OEM (McCullough) and Enter the Model Number and Click Go. If No Results, then Select the Click Here for Help. Now Scroll through the Units Listed and Locate your Model. Then Select your Model and View
the Breakdown/IPL.  
>>If you Hit a Snag or this Does Not Correct the Problem,  I Hope to be Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Happy. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 3 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. All Follow up Questions are Accepted at Any Time. Comments and Ratings are Greatly Appreciated. Thanks.

Respectfully

John